Payments are made directly to your BTCKings.com Poker account and will be available for withdrawal after "50 Bonus points" are made, once you recieve your weekly payment an screenshot of your current bonus points should be sent to me for verification purposes.
NOTE : A player should contribute 600 chips to the rake to collect 50 bonus points.
I'm not sure exactly what even means but, if I'm right, it doesn't look like you can withdraw without gambling your earnings.
Yes you're right, participants are forced to play on the ring games to collect the bonus points. Indeed it is not an easy task to do, a participant can even lose all his signature earning but failed to collect enough bonus points. Afaik this rule is being made to make the site looks more active, but I dont think it is good for the participants.